"use strict";
/*global define, app, socket, ajaxify, RELATIVE_PATH, bootbox */

define('admin/manage/category', [
	'uploader',
	'iconSelect',
	'admin/modules/colorpicker',
	'autocomplete'
], function(uploader, iconSelect, colorpicker, autocomplete) {
	var	Category = {};

	Category.init = function() {
		var modified_categories = {};

		function modified(el) {
			var cid = $(el).parents('form').attr('data-cid');

			if (cid) {
				modified_categories[cid] = modified_categories[cid] || {};
				modified_categories[cid][$(el).attr('data-name')] = $(el).val();
			}
		}

		function save(e) {
			e.preventDefault();

			if(Object.keys(modified_categories).length) {
				socket.emit('admin.categories.update', modified_categories, function(err, result) {
					if (err) {
						return app.alertError(err.message);
					}

					if (result && result.length) {
						app.alert({
							title: 'Updated Categories',
							message: 'Category IDs ' + result.join(', ') + ' was successfully updated.',
							type: 'success',
							timeout: 2000
						});
					}
				});
				modified_categories = {};
			}
		}

		$('.blockclass, form.category select').each(function() {
			var $this = $(this);
			$this.val($this.attr('data-value'));
		});

		function enableColorPicker(idx, inputEl) {
			var $inputEl = $(inputEl),
				previewEl = $inputEl.parents('[data-cid]').find('.preview-box');

			colorpicker.enable($inputEl, function(hsb, hex) {
				if ($inputEl.attr('data-name') === 'bgColor') {
					previewEl.css('background', '#' + hex);
				} else if ($inputEl.attr('data-name') === 'color') {
					previewEl.css('color', '#' + hex);
				}

				modified($inputEl[0]);
			});
		}

		function setupEditTargets() {
			$('[data-edit-target]').on('click', function() {
				var $this = $(this),
					target = $($this.attr('data-edit-target'));

				$this.addClass('hide');
				target.removeClass('hide').on('blur', function() {
					$this.removeClass('hide').children('span').html(this.value);
					$(this).addClass('hide');
				}).val($this.children('span').html());

				target.focus();
			});
		}

		// If any inputs have changed, prepare it for saving
		$('form.category input, form.category select').on('change', function(ev) {
			modified(ev.target);
		});

		// Colour Picker
		$('[data-name="bgColor"], [data-name="color"]').each(enableColorPicker);

		$('.save').on('click', save);
		$('.revert').on('click', ajaxify.refresh);
		$('.purge').on('click', function(e) {
			e.preventDefault();

			bootbox.confirm('<p class="lead">Do you really want to purge this category "' + $('form.category').find('input[data-name="name"]').val() + '"?</p><p><strong class="text-danger">Warning!</strong> All topics and posts in this category will be purged!</p>', function(confirm) {
				if (!confirm) {
					return;
				}
				socket.emit('admin.categories.purge', ajaxify.variables.get('cid'), function(err) {
					if (err) {
						return app.alertError(err.message);
					}
					app.alertSuccess('Category purged!');
					ajaxify.go('admin/manage/categories');
				});
			});
		});

		// Image Uploader
		$('.upload-button').on('click', function() {
			var inputEl = $(this),
				cid = inputEl.attr('data-cid');

			uploader.open(RELATIVE_PATH + '/api/admin/category/uploadpicture', { cid: cid }, 0, function(imageUrlOnServer) {
				inputEl.val(imageUrlOnServer);
				var previewBox = inputEl.parent().parent().siblings('.category-preview');
				previewBox.css('background', 'url(' + imageUrlOnServer + '?' + new Date().getTime() + ')')
					.css('background-size', 'cover');
				modified(inputEl[0]);
			});
		});

		// Image Remover
		$('.delete-image').on('click', function(e) {
			e.preventDefault();

			var inputEl = $('.upload-button'),
				previewBox = inputEl.parent().parent().siblings('.category-preview');

			inputEl.val('');
			previewBox.css('background-image', '');
			modified(inputEl[0]);
			$(this).parent().addClass('hide').hide();
		});

		// Icon selection
		$('.category-preview').on('click', function(ev) {
			iconSelect.init($(this).find('i'), modified);
		});

		// Parent Category Selector
		$('button[data-action="setParent"]').on('click', Category.launchParentSelector);
		$('button[data-action="removeParent"]').on('click', function() {
			var payload= {};
			payload[ajaxify.variables.get('cid')] = {
				parentCid: 0
			};

			socket.emit('admin.categories.update', payload, function(err) {
				if (err) {
					return app.alertError(err.message);
				}
				ajaxify.refresh();
			});
		});

		setupEditTargets();
		Category.setupPrivilegeTable();
	};

	Category.setupPrivilegeTable = function() {
		var searchEl = $('.privilege-search'),
			searchObj = autocomplete.user(searchEl);

		// User search + addition to table
		searchObj.on('autocompleteselect', function(ev, ui) {
			socket.emit('admin.categories.setPrivilege', {
				cid: ajaxify.variables.get('cid'),
				privilege: 'read',
				set: true,
				member: ui.item.user.uid
			}, function(err) {
				if (err) {
					return app.alertError(err.message);
				}

				Category.refreshPrivilegeTable();
				searchEl.val('');
			});
		});

		// Checkbox event capture
		$('.privilege-table-container').on('change', 'input[type="checkbox"]', function() {
			var checkboxEl = $(this),
				privilege = checkboxEl.parent().attr('data-privilege'),
				state = checkboxEl.prop('checked'),
				rowEl = checkboxEl.parents('tr'),
				member = rowEl.attr('data-group-name') || rowEl.attr('data-uid'),
				isPrivate = parseInt(rowEl.attr('data-private') || 0, 10),
				isGroup = rowEl.attr('data-group-name') !== undefined;

			if (member) {
				if (isGroup && privilege === 'groups:moderate' && !isPrivate && state) {
					bootbox.confirm('<strong>Are you sure you wish to grant the moderation privilege to this user group?</strong> This group is public, and any users can join at will.', function(confirm) {
						if (confirm) {
							Category.setPrivilege(member, privilege, state, checkboxEl);
						} else {
							checkboxEl.prop('checked', checkboxEl.prop('checked') ^ 1);
						}
					});
				} else {
					Category.setPrivilege(member, privilege, state, checkboxEl);
				}
			} else {
				app.alertError('[[error:invalid-data]]');
			}
		});

		Category.exposeAssumedPrivileges();
	};

	Category.refreshPrivilegeTable = function() {
		socket.emit('admin.categories.getPrivilegeSettings', ajaxify.variables.get('cid'), function(err, privileges) {
			if (err) {
				return app.alertError(err.message);
			}

			templates.parse('admin/partials/categories/privileges', {
				privileges: privileges
			}, function(html) {
				$('.privilege-table-container').html(html);
				Category.exposeAssumedPrivileges();
			});
		});
	};

	Category.exposeAssumedPrivileges = function() {
		/*
			If registered-users has a privilege enabled, then all users and groups of that privilege
			should be assumed to have that privilege as well, even if not set in the db, so reflect
			this arrangement in the table
		*/
		var privs = [];
		$('.privilege-table tr[data-group-name="registered-users"] td input[type="checkbox"]').parent().each(function(idx, el) {
			if ($(el).find('input').prop('checked')) {
				privs.push(el.getAttribute('data-privilege'));
			}
		});
		for(var x=0,numPrivs=privs.length;x<numPrivs;x++) {
			var inputs = $('.privilege-table tr[data-group-name]:not([data-group-name="registered-users"],[data-group-name="guests"]) td[data-privilege="' + privs[x] + '"] input');
			inputs.each(function(idx, el) {
				if (!el.checked) {
					el.indeterminate = true;
				}
			});
		}
	};

	Category.setPrivilege = function(member, privilege, state, checkboxEl) {
		socket.emit('admin.categories.setPrivilege', {
			cid: ajaxify.variables.get('cid'),
			privilege: privilege,
			set: state,
			member: member
		}, function(err) {
			if (err) {
				return app.alertError(err.message);
			}

			checkboxEl.replaceWith('<i class="fa fa-spin fa-spinner"></i>');
			Category.refreshPrivilegeTable();
		});
	};

	Category.launchParentSelector = function() {
		socket.emit('categories.get', function(err, categories) {
			templates.parse('partials/category_list', {
				categories: categories
			}, function(html) {
				var modal = bootbox.dialog({
					message: html,
					title: 'Set Parent Category'
				});

				modal.find('li[data-cid]').on('click', function() {
					var parentCid = $(this).attr('data-cid'),
						payload = {};

					payload[ajaxify.variables.get('cid')] = {
						parentCid: parentCid
					};

					socket.emit('admin.categories.update', payload, function(err) {
						if (err) {
							return app.alertError(err.message);
						}

						modal.modal('hide');
						ajaxify.refresh();
					});
				});
			});
		});
	};

	return Category;
});